Need answer please

Widget Co. needs to design a product layout for a new product, the amazing "Thatsit". The company plans to use this new production line eight hours a day in order to meet projected demand of 1,440 units per day. The following table describes the tasks involved in the production of a "Thatsit". TASK PREDECESSOR TIME(seconds) X 3 - N X, Y For output to equal projected demand, what should be the actual cycle time for this production line? O a. 54 seconds O b. 27 seconds O c. 20 seconds O d. 18 seconds O e. 14 seconds